package com.atguigu.gulimail.product.service.impl;

import com.atguigu.gulimail.product.config.MyThreadConfig;
import com.atguigu.gulimail.product.entity.SkuImagesEntity;
import com.atguigu.gulimail.product.entity.SpuInfoDescEntity;
import com.atguigu.gulimail.product.service.*;
import com.atguigu.gulimail.product.vo.AttrValueWithSkuIdVo;
import com.atguigu.gulimail.product.vo.SkuItemSaleAttrVo;
import com.atguigu.gulimail.product.vo.SkuItemVo;
import org.checkerframework.checker.units.qual.A;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.ThreadPoolExecutor;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimail.product.dao.SkuInfoDao;
import com.atguigu.gulimail.product.entity.SkuInfoEntity;
import org.springframework.util.StringUtils;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

    @Autowired
    SkuImagesService imagesService;
    @Autowired
    SpuInfoDescService spuInfoDescService;
    @Autowired
    AttrGroupService attrGroupService;
    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;
    @Autowired
    ThreadPoolExecutor threadPool;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveSkuInfo(SkuInfoEntity skuInfoEntity) {
        this.baseMapper.insert(skuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SkuInfoEntity> skuInfoEntityQueryWrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            skuInfoEntityQueryWrapper.and((wrapper)->{
                wrapper.eq("sku_id",key).or().like("sku_name",key);
            });
        }
        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(key)&&!"0".equalsIgnoreCase(catelogId)){
            skuInfoEntityQueryWrapper.eq("catelog_id",catelogId);
        }
        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(key)&&!"0".equalsIgnoreCase(brandId)){
            skuInfoEntityQueryWrapper.eq("brand_id",brandId);
        }
        String min = (String) params.get("min");
        if (!StringUtils.isEmpty(key)){
            skuInfoEntityQueryWrapper.ge("price",min);
        }
        String max = (String) params.get("max");
        if (!StringUtils.isEmpty(key)){
            try {
                BigDecimal bigDecimal = new BigDecimal(max);
                if (bigDecimal.compareTo(new BigDecimal("0"))==1) {
                    skuInfoEntityQueryWrapper.le("price",max);
                }
            }catch (Exception e){

            }

        }

        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                skuInfoEntityQueryWrapper
        );
            return new PageUtils(page);
    }

    @Override
    public List<SkuInfoEntity> getSkusBySpuId(Long spuId) {

        List<SkuInfoEntity> list = this.list(new QueryWrapper<SkuInfoEntity>().eq("spu_id",spuId));
        return list;
    }

    @Override
    public SkuItemVo item(Long skuId) {
        SkuItemVo skuItemVo = new SkuItemVo();
        CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(() -> {
            //1.sku基本信息获取
            SkuInfoEntity info = getById(skuId);
            skuItemVo.setInfo(info);
            return info;
        }, threadPool);

        CompletableFuture<Void> saleAttrFuture = infoFuture.thenAcceptAsync((res) -> {
            //3.获取spu的销售属性组合
            List<SkuItemSaleAttrVo> saleAttrVos = skuSaleAttrValueService.getSaleAttrBySpuId(res.getSpuId());
            skuItemVo.setSaleAttr(saleAttrVos);
        }, threadPool);

        CompletableFuture<Void> descFuture = infoFuture.thenAcceptAsync((res) -> {
            //4.获取spu的介绍
            SpuInfoDescEntity spuInfoDescEntity = spuInfoDescService.getById(res.getSpuId());
            skuItemVo.setDesc(spuInfoDescEntity);
        }, threadPool);

        CompletableFuture<Void> baseAttrFuture = infoFuture.thenAcceptAsync((res) -> {
            //5.获取spu的规格参数
            List<SkuItemVo.SpuItemAttrGroupVo> attrGroupVos = attrGroupService.getAttrGroupWithAttrsBySpuId(res.getSpuId(), res.getCatalogId());
            skuItemVo.setGroupAttrs(attrGroupVos);
        }, threadPool);

        CompletableFuture<Void> imageFuture = CompletableFuture.runAsync(() -> {
            //2.sku的图片信息
            List<SkuImagesEntity> images = imagesService.getImagesBySkuId(skuId);
            skuItemVo.setImages(images);
        }, threadPool);

        //等到所有任务都完成
        try {
            CompletableFuture.allOf(imageFuture,saleAttrFuture,descFuture,baseAttrFuture).get();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } catch (ExecutionException e) {
            e.printStackTrace();
        }
        List<SkuItemSaleAttrVo> saleAttr = skuItemVo.getSaleAttr();
            System.out.println(saleAttr);
        return skuItemVo;

    }

}